“Whitney Houston is currently in an out-patient rehab program for drug and alcohol treatment,” her rep told PEOPLE in a statement. “Whitney voluntarily entered the program to support her long-standing recovery process.”

The 47-year-old singer initially entered rehab in 2004, telling ABC News interviewer Diane Sawyer at the time: “I partied a lot. Trust me: I partied my tail off.” But, the singer also admitted, “You get to a point where you know the party’s over.”